@node log2 @section @code{log2} @findex log2 POSIX specification: @url{http://www.opengroup.org/susv3xsh/log2.html} Gnulib module: --- Portability problems fixed by Gnulib: @itemize @end itemize Portability problems not fixed by Gnulib: @itemize @item This function is missing on some platforms: MacOS X 10.3, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, AIX 5.1, IRIX 6.5, Solaris 9, Cygwin, Interix 3.5. @end itemize